使用超临界方法制备石墨烯氧化物合氧化气凝,以有效地从废水中去除新出现的污染物
Subhash Kumar Sharma1, P Ranjani1, Hadas Mamane2
1Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, India.
Scientific reports
|September 30, 2023
概括
一种新的石墨烯氧化物合的气凝 (GO-SA) 有效地从水中去除了织品染料 (酸绿色25,水晶紫色) 和抗生素硫甲. 这种可重复使用的吸附剂显示出高效率和污水净化潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 织行业的废水由于新出现的染料和药品等污染物,造成了重大环境风险.
- 传统的水处理方法往往难以有效地去除各种污染物.
研究的目的:
- 开发和描述一种可扩展的石墨烯氧化物合改性气凝 (GO-SA),用于吸附性去除酸绿25 (AG),水晶紫 (CV) 和硫甲 (SMA).
- 调查GO-SA的吸附性能,动力学和可重复使用性,以实现高效的废水处理.
主要方法:
- 使用超临界流体沉积 (SFD) 合成GO-SA.
- 通过XRD,FTIR,HR-SEM,TGA和BET分析进行表征.
- 使用响应表面方法 (RSM-CCD) 优化吸附实验,以评估去除效率,同热度和动力学.
主要成果:
- GO-SA展示了增强的表面积和纹理特性.
- 实现了高清除效率:AG的98.23%,CV的98.71%,SMA的94.46%.
- 吸附跟随兰格穆尔异温和伪二次动力学,具有较高的SMA容量 (67.07 mg g-1).
- 吸附剂在5个循环后保持了>85%的去除效率,显示出出色的可重复使用性.
结论:
- GO-SA是一种高效且可重复使用的吸附剂,用于从水溶液中去除阳离子染料,阴离子染料和抗生素.
- 开发的材料显示出在织品和其他工业废水净化中应用的巨大潜力.
- 该研究强调了SFD在制造先进吸附材料方面的成功应用.
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